Compilare: user.c: In function ‘main’: user.c:40:5: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘long long int *’ [-Wformat=] fscanf(fin, "%d", &p ); ^ user.c:44:9: warning: ‘return’ with no value, in function returning non-void [enabled by default] return; ^ user.c:50:9: warning: ‘return’ with no value, in function returning non-void [enabled by default] return; ^ user.c:58:5: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(fout, "%d\n", n); ^ user.c:40:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &p ); ^